.csbottom {
    width: 100%;
    height: 142px;
    position: fixed;
    bottom: 0;
    left: 0;
    background: #fff;
    display: flex;
    justify-content: center;
    .btn {
        width: 702px;
        height: 76px;
        margin-top: 12px;
        border: 2px solid #f0f0f0;
        border-radius: 8px;
        background: #fff;
    }
}